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| Title |
ГОСТ 2.119-73. ЕСКД. Эскизный проект |
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Book Whole |
| Year |
1987 |
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Pages |
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| Keywords |
gost, detproj |
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no |
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Serial |
867 |
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| Author |
Kostiuk, T.; Spears, D. |
| Title |
30 μm heterodyne receiver |
Type |
Journal Article |
| Year |
1987 |
Publication |
Int. J. Infrared and Millimeter Waves |
Abbreviated Journal |
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| Volume |
8 |
Issue |
10 |
Pages |
1269-1279 |
| Keywords |
HgCdTe detector mixer |
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Serial |
235 |
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| Author |
Uchiki, Hisao; Kobayashi, Takayoshi; Sakaki, Hiroyuki |
| Title |
Photoluminescence and energyâ€loss rates in GaAs quantum wells under highâ€density excitation |
Type |
Journal Article |
| Year |
1987 |
Publication |
J. Appl. Phys. |
Abbreviated Journal |
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| Volume |
62 |
Issue |
3 |
Pages |
1010-1016 |
| Keywords |
2DEG, GaAs/AlGaAs, heat flow, electron-phonon, hole-phonon, carrier-phonon, interactions |
| Abstract |
The timeâ€resolved luminescence spectra from excited conduction subbands in three samples of multiâ€quantumâ€well GaAs/AlxGa1-xAs (x=0.3 and 1) semiconductors with several well widths and barrier heights were obtained under highâ€density excitations by a 30â€ps pulsed laser at 532 nm, which generated electron–hole pairs to the concentration of 1010–1013/cm2 per well per pulse at 77 K. The temperature and the Fermi energy of electron were determined by fitting best the constructed timeâ€resolved spectrum to the observed, and the timeâ€dependent electron energy was obtained by using these parameters. The energyâ€loss rates of hot electrons are at least twice smaller than the calculated ones induced by the electronâ€polar phonon scattering, including the screening effect due to the high carrier density. |
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Serial |
635 |
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| Author |
Gurevich, A. Vl.; Mints, R. G. |
| Title |
Self-heating in normal metals and superconductors |
Type |
Journal Article |
| Year |
1987 |
Publication |
Rev. Mod. Phys. |
Abbreviated Journal |
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| Volume |
59 |
Issue |
4 |
Pages |
941-1000 |
| Keywords |
HEB, Joule self-heating effect |
| Abstract |
This review is devoted to the physics of current-carrying superconductors and normal metals having two or more stable states sustained by Joule self-heating. The creation, propagation, and localization of electrothermal domains and switching waves leading to the transition from one stable state to another in uniform and nonuniform samples are treated in detail. The connection between thermal bistability and hysteresis, dropping and stepped current-voltage characteristics, self-induced oscillations of current and voltage, selfreplication of electrothermal domains, and the formation of periodic and stochastic resistive structures are considered. |
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no |
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Serial |
917 |
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| Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Mirskii, G. I. |
| Title |
Submillimeter backward-wave-tube spectrometer-relaxometer |
Type |
Journal Article |
| Year |
1987 |
Publication |
Pribory i Tekhnika Eksperimenta |
Abbreviated Journal |
Pribory i Tekhnika Eksperimenta |
| Volume |
30 |
Issue |
4 |
Pages |
131-137 |
| Keywords |
BWO, applications |
| Abstract |
A backward-wave-tube (BWT) spectrometer-relaxometer is described that is designed for study of the relaxation characteristics of photoconductors in the wavelength range of 2-0.25 mm – in particular, to measure the relaxation times of the submillimeter photoconductivity of germanium in the range of 10[sup:-4]-10[sup:-9] sec and to determine from these data the concentration of compensating impurities of from 10[sup:10] to 10[sup:14] cm[sup:-3]. The instrument uses the beats of the oscillations of two BWTs and records the amplitude-frequency response of the specimen with variation of the beat frequency from 10[sup:4] to 10[sup:8] Hz with accumulation of the desired signal for less than or equal to1 sec by means of a quadrature synchronous detector. The beat frequency is stabilized and the quadrature voltages of the synchronous detector are formed by means of phase-locked loops. |
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Russian |
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1699 |
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